101688623 has 2 divisors, whose sum is σ = 101688624. Its totient is φ = 101688622.

The previous prime is 101688583. The next prime is 101688637. The reversal of 101688623 is 326886101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101688623 - 2¹⁴ = 101672239 is a prime.

It is a super-2 number, since 2×101688623² = 20681152095272258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101688673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50844311 + 50844312.

It is an arithmetic number, because the mean of its divisors is an integer number (50844312).

Almost surely, 2^101688623 is an apocalyptic number.

101688623 is a deficient number, since it is larger than the sum of its proper divisors (1).

101688623 is an equidigital number, since it uses as much as digits as its factorization.

101688623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 101688623 is about 10084.0776970430. The cubic root of 101688623 is about 466.7569451759.

The spelling of 101688623 in words is "one hundred one million, six hundred eighty-eight thousand, six hundred twenty-three".